Beta Columbae information

β Columbae
	Location of β Columbae (circled)
Observation data; Epoch J2000.0 Equinox J2000.0 (ICRS)
Constellation	Columba
Right ascension	05h 50m 57.5929s
Declination	−35° 46′ 05.9152″
Apparent magnitude (V)	3.105
Characteristics
Spectral type	K1 IIICN+1
U−B color index	+1.189
B−V color index	+1.162
R−I color index	+0.58
Astrometry
Radial velocity (Rv)	+88.9 km/s
Proper motion (μ)	RA: +54.77 mas/yr ; Dec.: 404.20 mas/yr
Parallax (π)	37.41 ± 0.12 mas
Distance	87.2 ± 0.3 ly ; (26.73 ± 0.09 pc)
Absolute magnitude (MV)	+1.01
Details
Mass	1.10 ± 0.20 M☉
Radius	11.5 R☉
Luminosity (bolometric)	56 L☉
Surface gravity (log g)	2.62 cgs
Temperature	4,545 K
Metallicity [Fe/H]	0.11 dex
Age	2 Gyr
Other designations
	β Col, Beta Columbae, Beta Col, CD−35 2546, CPD−35 752, FK5 223, GC 7364, HD 39425, HIP 27628, HR 2040, LTT 2392, NLTT 15724, PPM 281952, SAO 196240.
Database references
SIMBAD	data

Beta Columbae (β Columbae, abbreviated Beta Col, β Col), officially named Wazn /ˈwɒzən/,^[12] is the second-brightest star in the southern constellation of Columba.^[10] It has an apparent visual magnitude of 3.1,^[2] which is bright enough to be viewed with the naked eye even from an urban location. Parallax measurements place it at a distance of about 87.2 light-years (26.7 parsecs) from the Sun.^[1]

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^ "IAU Catalog of Star Names". Retrieved 28 July 2016.

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[IAU-CSN-12] "IAU Catalog of Star Names". Retrieved 28 July 2016.

Observation data Epoch J2000.0 Equinox J2000.0 (ICRS)
Location of β Columbae (circled)
Constellation	Columba
Right ascension	05^h 50^m 57.5929^s^[1]
Declination	−35° 46′ 05.9152″^[1]
Apparent magnitude (V)	3.105^[2]
Characteristics
Spectral type	K1 IIICN+1^[3]
U−B color index	+1.189^[2]
B−V color index	+1.162^[2]
R−I color index	+0.58^[4]
Astrometry

Radial velocity (R_v)	+88.9^[5] km/s
Proper motion (μ)	RA: +54.77^[1] mas/yr Dec.: 404.20^[1] mas/yr
Parallax (π)	37.41 ± 0.12 mas^[1]
Distance	87.2 ± 0.3 ly (26.73 ± 0.09 pc)
Absolute magnitude (M_V)	+1.01^[6]

Details

Mass	1.10 ± 0.20^[7] `M`_☉
Radius	11.5^[8] `R`_☉
Luminosity (bolometric)	56^[9] `L`_☉
Surface gravity (log g)	2.62^[3] cgs
Temperature	4,545^[3] K
Metallicity [Fe/H]	0.11^[3] dex
Age	2^[10] Gyr

Other designations
β Col, Beta Columbae, Beta Col, CD−35 2546, CPD−35 752, FK5 223, GC 7364, HD 39425, HIP 27628, HR 2040, LTT 2392, NLTT 15724, PPM 281952, SAO 196240.^[11]
Database references
SIMBAD	data

Beta Columbae information

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